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TuningBot DTC Database · v4.37.15

P278B Transmission kick - down switch - circuit range/performance

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainEngineOBD2

What P278B means

P278B
Transmission kick - down switch - circuit range/performance Generic · engine Data confidence 78%

The control module judged the Transmission kick - down switch signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.

Possible causes

  • Wiring
  • transmission kick - down switch
  • TCM
  • ECM

Related and nearby codes

How to read P278B

P

Powertrain: engine, transmission and driveline systems.

2

Generic SAE-standard code: same meaning on every make.

78B

Specific fault index within the subsystem.

Frequently asked questions about P278B

What does P278B mean?

Transmission kick - down switch - circuit range/performance. The control module judged the Transmission kick - down switch signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.

Is P278B generic or manufacturer-specific?

P278B is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P278B at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

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